Clicking on property inspector generates error

Hi,

In R2018b, any time that I click on the Property Inspector on a figure window, I get an error as follows and the Property Inspector does not appear:

Error using exist
The first input to exist must be a string scalar or character vector.

Error in internal.matlab.inspector.peer.InspectorFactory/loadCacheFile (line 151)
            if loadDefaultCache && exist(this.ProxyViewMapCacheFile, 'file')

The problem occurs for any kind of figure or plot. When I debug, I find that this.ProxyViewMapCacheFile is a string array with 3 elements, and therefore is not a valid input for exist():

>> this.ProxyViewMapCacheFile.'

ans = 

  3×1 string array

    "C:\Program Files\MATLAB\R2018b\toolbox\matlab\datatools\inspector\registration\"
    ""
    "inspectorProxyViewMapCache.mat"

Any ideas on how I can resolve this problem? I am using Windows 10 (64-bit).

Thanks,

CL

[Chao Han]

I got the same error. I don't know why.

[Chao Han]

Here is solution:

https://www.mathworks.com/matlabcentral/answers/440786-error-when-opening-property-inspector

I changed the order of adding folders to the path, and it worked.